Highly radiative shock experiments driven by GEKKO XII
| Autor: | Alessandra Ravasio, Youichi Sakawa, T. Ide, C. D. Gregory, J. Boudenne, H. Tanji, Claire Michaut, M. Koenig, Hideaki Takabe, P. Barroso, Taichi Morita, A. Dizière, Yasuhiro Kuramitsu |
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| Přispěvatelé: | Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institute of Laser Engineering, Osaka University, Galaxies, Etoiles, Physique, Instrumentation (GEPI) |
| Rok vydání: | 2011 |
| Předmět: |
Shock wave
Physics Electron density chemistry.chemical_element Astronomy and Astrophysics Fluid mechanics Plasma Computational physics Shock (mechanics) Xenon chemistry Space and Planetary Science Radiative transfer Atomic physics [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics::Galaxy Astrophysics Dimensionless quantity |
| Zdroj: | Astrophysics and Space Science Astrophysics and Space Science, 2011, 336, pp.213-218. ⟨10.1007/s10509-011-0653-6⟩ |
| ISSN: | 1572-946X 0004-640X |
| Popis: | International audience; In this paper, recent results obtained on highly radiative shocks generated in a xenon filled gas cell using the GEKKO XII laser facility are presented. Data show extremely high shock velocity (>=150 km/s) never achieved before in gas. Preliminary analyses based on theoretical dimensionless numbers and numerical simulations suggest that these radiative shocks reach a new radiative regime where the radiative pressure plays a role in the dynamics and structure of the shock. A major effect observed is a strong anisotropic emission in the downstream gas. This unexpected feature is discussed and compared to available 2D radiation hydrodynamic simulations. |
| Databáze: | OpenAIRE |
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